Improvement in cutting apparatus for harvesters



c. 0. READ.

improvement in Cfltting Apparatus for Harvesters N0.1 28,326.Patentedlune 25,1872.

Witmsts: 311mm:

UNITED STATES PATENT QFFIGE CALVIN D. READ, OF AYER, MASSACHUSETTS.

IMPROVEMENT IN CUTTING APPARATUS FOR HARVESII'ERS.

Specification forming part of Letters Patent No: 128,326, dated June 25,1872.

Specification describing a new and Improved Harvester Finger-Bar andFinger, invented by CALVIN D. READ, of Ayer, in the county of Middlesexand State of Massachusetts.

Figure 1 represents a top view, partly in section, of my improvedfinger-bar. Fig. 2 is a vertical transverse section of the same.

Similar letters of reference indicate correspondin g parts.

- and with an upwardly-projecting flange, a, at

the back edge. Each finger is made of platesteel, and can be cut out atone operation, requiring afterward but a little further manipulationthan the turning on of a screw-thread at the rear end for the receptionof a nut, b. The slope on the face of the finger-bar serves in part topreventlongitudinal displacement of the finger, and to take some strainoff the nut b, which bears against the flange a,-the latter beingnotched or perforated for the reception of the threaded parts of thefingers. In front the bar A is notched to admit beveledged downwardprojections d of the fingers. These projections keep the fingers down onthe bar, and prevent their backward displacement. The fingers are placedin such proximity to each other on the fin ger-bar that there will betwo or three or more for every V-knife of the cutter-bar. Thisarrangement facilitates the operation of the knives.

Having thus described my invention, I claim as new and desire to secureby Letters Patent The combination of the fingers B, provided withdownward projections 11 and threaded rear ends, with the finger-bar A,notched at its front edge, and having the perforated flange a, as shownand described.

CALVIN D. READ.

Witnesses:

J OSIAH F. STEVENS, JOSIAH K. BENNETT.

